Finding the Third Proportional to 611,362,012.50 and 1,291,728,825

Step by Step Solution

1. Step 1: Write the proportion equation
   611,362,012.50 : 1,291,728,825 = 1,291,728,825 : x
2. Step 2: Convert to fraction form
   611,362,012.50/1,291,728,825 = 1,291,728,825/x
3. Step 3: Cross multiply
   611,362,012.50x = 1,291,728,825 × 1,291,728,825
4. Step 4: Simplify right side
   611,362,012.50x = 1,668,563,357,335,880,704
5. Step 5: Solve for x
   x = 1,668,563,357,335,880,704/611,362,012.50
6. Step 6: Final answer
   x = 2,729,255,863.50