Finding the Third Proportional to 87,534.50 and 137,171.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,534.50 : 137,171.50 = 137,171.50 : x
2. Step 2: Convert to fraction form
   87,534.50/137,171.50 = 137,171.50/x
3. Step 3: Cross multiply
   87,534.50x = 137,171.50 × 137,171.50
4. Step 4: Simplify right side
   87,534.50x = 18,816,020,412.25
5. Step 5: Solve for x
   x = 18,816,020,412.25/87,534.50
6. Step 6: Final answer
   x = 214,955.48