Finding the Third Proportional to 58,458.50 and 91,110

Step by Step Solution

1. Step 1: Write the proportion equation
   58,458.50 : 91,110 = 91,110 : x
2. Step 2: Convert to fraction form
   58,458.50/91,110 = 91,110/x
3. Step 3: Cross multiply
   58,458.50x = 91,110 × 91,110
4. Step 4: Simplify right side
   58,458.50x = 8,301,032,100
5. Step 5: Solve for x
   x = 8,301,032,100/58,458.50
6. Step 6: Final answer
   x = 141,998.72