Finding the Third Proportional to 58,398.79 and 91,490.45

Step by Step Solution

1. Step 1: Write the proportion equation
   58,398.79 : 91,490.45 = 91,490.45 : x
2. Step 2: Convert to fraction form
   58,398.79/91,490.45 = 91,490.45/x
3. Step 3: Cross multiply
   58,398.79x = 91,490.45 × 91,490.45
4. Step 4: Simplify right side
   58,398.79x = 8,370,502,298.25
5. Step 5: Solve for x
   x = 8,370,502,298.25/58,398.79
6. Step 6: Final answer
   x = 143,333.50