Finding the Third Proportional to 58,137 and 87,205.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,137 : 87,205.50 = 87,205.50 : x
2. Step 2: Convert to fraction form
   58,137/87,205.50 = 87,205.50/x
3. Step 3: Cross multiply
   58,137x = 87,205.50 × 87,205.50
4. Step 4: Simplify right side
   58,137x = 7,604,799,230.25
5. Step 5: Solve for x
   x = 7,604,799,230.25/58,137
6. Step 6: Final answer
   x = 130,808.25