Finding the Third Proportional to 59,139 and 89,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,139 : 89,320.50 = 89,320.50 : x
2. Step 2: Convert to fraction form
   59,139/89,320.50 = 89,320.50/x
3. Step 3: Cross multiply
   59,139x = 89,320.50 × 89,320.50
4. Step 4: Simplify right side
   59,139x = 7,978,151,720.25
5. Step 5: Solve for x
   x = 7,978,151,720.25/59,139
6. Step 6: Final answer
   x = 134,905.08