Finding the Third Proportional to 587,421,666 and 881,132,499

Step by Step Solution

1. Step 1: Write the proportion equation
   587,421,666 : 881,132,499 = 881,132,499 : x
2. Step 2: Convert to fraction form
   587,421,666/881,132,499 = 881,132,499/x
3. Step 3: Cross multiply
   587,421,666x = 881,132,499 × 881,132,499
4. Step 4: Simplify right side
   587,421,666x = 776,394,480,793,985,024
5. Step 5: Solve for x
   x = 776,394,480,793,985,024/587,421,666
6. Step 6: Final answer
   x = 1,321,698,748.50