Finding the Third Proportional to 587,418,679.50 and 881,128,123.50

Step by Step Solution

1. Step 1: Write the proportion equation
   587,418,679.50 : 881,128,123.50 = 881,128,123.50 : x
2. Step 2: Convert to fraction form
   587,418,679.50/881,128,123.50 = 881,128,123.50/x
3. Step 3: Cross multiply
   587,418,679.50x = 881,128,123.50 × 881,128,123.50
4. Step 4: Simplify right side
   587,418,679.50x = 776,386,770,022,631,296
5. Step 5: Solve for x
   x = 776,386,770,022,631,296/587,418,679.50
6. Step 6: Final answer
   x = 1,321,692,341.63