Finding the Third Proportional to 865,243,078,713 and 1,271,945,708,932.50

Step by Step Solution

1. Step 1: Write the proportion equation
   865,243,078,713 : 1,271,945,708,932.50 = 1,271,945,708,932.50 : x
2. Step 2: Convert to fraction form
   865,243,078,713/1,271,945,708,932.50 = 1,271,945,708,932.50/x
3. Step 3: Cross multiply
   865,243,078,713x = 1,271,945,708,932.50 × 1,271,945,708,932.50
4. Step 4: Simplify right side
   865,243,078,713x = 1,617,845,886,471,800,065,359,872
5. Step 5: Solve for x
   x = 1,617,845,886,471,800,065,359,872/865,243,078,713
6. Step 6: Final answer
   x = 1,869,816,617,173.35