Finding the Third Proportional to 58,811.50 and 91,728.25

Step by Step Solution

1. Step 1: Write the proportion equation
   58,811.50 : 91,728.25 = 91,728.25 : x
2. Step 2: Convert to fraction form
   58,811.50/91,728.25 = 91,728.25/x
3. Step 3: Cross multiply
   58,811.50x = 91,728.25 × 91,728.25
4. Step 4: Simplify right side
   58,811.50x = 8,414,071,848.06
5. Step 5: Solve for x
   x = 8,414,071,848.06/58,811.50
6. Step 6: Final answer
   x = 143,068.48