Finding the Third Proportional to 59,474.25 and 86,978.63

Step by Step Solution

1. Step 1: Write the proportion equation
   59,474.25 : 86,978.63 = 86,978.63 : x
2. Step 2: Convert to fraction form
   59,474.25/86,978.63 = 86,978.63/x
3. Step 3: Cross multiply
   59,474.25x = 86,978.63 × 86,978.63
4. Step 4: Simplify right side
   59,474.25x = 7,565,281,206.89
5. Step 5: Solve for x
   x = 7,565,281,206.89/59,474.25
6. Step 6: Final answer
   x = 127,202.63