Finding the Third Proportional to 58,335 and 90,499

Step by Step Solution

1. Step 1: Write the proportion equation
   58,335 : 90,499 = 90,499 : x
2. Step 2: Convert to fraction form
   58,335/90,499 = 90,499/x
3. Step 3: Cross multiply
   58,335x = 90,499 × 90,499
4. Step 4: Simplify right side
   58,335x = 8,190,069,001
5. Step 5: Solve for x
   x = 8,190,069,001/58,335
6. Step 6: Final answer
   x = 140,397.17