Finding the Third Proportional to 578,257,987.50 and 880,938,736.50

Step by Step Solution

1. Step 1: Write the proportion equation
   578,257,987.50 : 880,938,736.50 = 880,938,736.50 : x
2. Step 2: Convert to fraction form
   578,257,987.50/880,938,736.50 = 880,938,736.50/x
3. Step 3: Cross multiply
   578,257,987.50x = 880,938,736.50 × 880,938,736.50
4. Step 4: Simplify right side
   578,257,987.50x = 776,053,057,466,216,448
5. Step 5: Solve for x
   x = 776,053,057,466,216,448/578,257,987.50
6. Step 6: Final answer
   x = 1,342,053,329.56