Finding the Third Proportional to 585,086,847.75 and 1,218,601,165.50

Step by Step Solution

1. Step 1: Write the proportion equation
   585,086,847.75 : 1,218,601,165.50 = 1,218,601,165.50 : x
2. Step 2: Convert to fraction form
   585,086,847.75/1,218,601,165.50 = 1,218,601,165.50/x
3. Step 3: Cross multiply
   585,086,847.75x = 1,218,601,165.50 × 1,218,601,165.50
4. Step 4: Simplify right side
   585,086,847.75x = 1,484,988,800,557,958,400
5. Step 5: Solve for x
   x = 1,484,988,800,557,958,400/585,086,847.75
6. Step 6: Final answer
   x = 2,538,065,598.75