Finding the Third Proportional to 59,209 and 90,028.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,209 : 90,028.50 = 90,028.50 : x
2. Step 2: Convert to fraction form
   59,209/90,028.50 = 90,028.50/x
3. Step 3: Cross multiply
   59,209x = 90,028.50 × 90,028.50
4. Step 4: Simplify right side
   59,209x = 8,105,130,812.25
5. Step 5: Solve for x
   x = 8,105,130,812.25/59,209
6. Step 6: Final answer
   x = 136,890.18