Finding the Third Proportional to 85,518 and 132,428.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,518 : 132,428.50 = 132,428.50 : x
2. Step 2: Convert to fraction form
   85,518/132,428.50 = 132,428.50/x
3. Step 3: Cross multiply
   85,518x = 132,428.50 × 132,428.50
4. Step 4: Simplify right side
   85,518x = 17,537,307,612.25
5. Step 5: Solve for x
   x = 17,537,307,612.25/85,518
6. Step 6: Final answer
   x = 205,071.54