Finding the Third Proportional to 56,513.50 and 85,498

Step by Step Solution

1. Step 1: Write the proportion equation
   56,513.50 : 85,498 = 85,498 : x
2. Step 2: Convert to fraction form
   56,513.50/85,498 = 85,498/x
3. Step 3: Cross multiply
   56,513.50x = 85,498 × 85,498
4. Step 4: Simplify right side
   56,513.50x = 7,309,908,004
5. Step 5: Solve for x
   x = 7,309,908,004/56,513.50
6. Step 6: Final answer
   x = 129,348.00