Finding the Third Proportional to 58,156 and 87,231.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,156 : 87,231.50 = 87,231.50 : x
2. Step 2: Convert to fraction form
   58,156/87,231.50 = 87,231.50/x
3. Step 3: Cross multiply
   58,156x = 87,231.50 × 87,231.50
4. Step 4: Simplify right side
   58,156x = 7,609,334,592.25
5. Step 5: Solve for x
   x = 7,609,334,592.25/58,156
6. Step 6: Final answer
   x = 130,843.50