Finding the Third Proportional to 58,320 and 86,249.81

Step by Step Solution

1. Step 1: Write the proportion equation
   58,320 : 86,249.81 = 86,249.81 : x
2. Step 2: Convert to fraction form
   58,320/86,249.81 = 86,249.81/x
3. Step 3: Cross multiply
   58,320x = 86,249.81 × 86,249.81
4. Step 4: Simplify right side
   58,320x = 7,439,030,156.29
5. Step 5: Solve for x
   x = 7,439,030,156.29/58,320
6. Step 6: Final answer
   x = 127,555.39