Finding the Third Proportional to 719,687,512.50 and 1,105,720,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   719,687,512.50 : 1,105,720,321.50 = 1,105,720,321.50 : x
2. Step 2: Convert to fraction form
   719,687,512.50/1,105,720,321.50 = 1,105,720,321.50/x
3. Step 3: Cross multiply
   719,687,512.50x = 1,105,720,321.50 × 1,105,720,321.50
4. Step 4: Simplify right side
   719,687,512.50x = 1,222,617,429,378,063,360
5. Step 5: Solve for x
   x = 1,222,617,429,378,063,360/719,687,512.50
6. Step 6: Final answer
   x = 1,698,817,067.33