Finding the Third Proportional to 59,739.75 and 90,070.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,739.75 : 90,070.50 = 90,070.50 : x
2. Step 2: Convert to fraction form
   59,739.75/90,070.50 = 90,070.50/x
3. Step 3: Cross multiply
   59,739.75x = 90,070.50 × 90,070.50
4. Step 4: Simplify right side
   59,739.75x = 8,112,694,970.25
5. Step 5: Solve for x
   x = 8,112,694,970.25/59,739.75
6. Step 6: Final answer
   x = 135,800.62