Finding the Third Proportional to 660,103.50 and 991,614

Step by Step Solution

1. Step 1: Write the proportion equation
   660,103.50 : 991,614 = 991,614 : x
2. Step 2: Convert to fraction form
   660,103.50/991,614 = 991,614/x
3. Step 3: Cross multiply
   660,103.50x = 991,614 × 991,614
4. Step 4: Simplify right side
   660,103.50x = 983,298,324,996
5. Step 5: Solve for x
   x = 983,298,324,996/660,103.50
6. Step 6: Final answer
   x = 1,489,612.35