Finding the Third Proportional to 88,065 and 136,417.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,065 : 136,417.50 = 136,417.50 : x
2. Step 2: Convert to fraction form
   88,065/136,417.50 = 136,417.50/x
3. Step 3: Cross multiply
   88,065x = 136,417.50 × 136,417.50
4. Step 4: Simplify right side
   88,065x = 18,609,734,306.25
5. Step 5: Solve for x
   x = 18,609,734,306.25/88,065
6. Step 6: Final answer
   x = 211,318.17