Finding the Third Proportional to 58,598 and 90,810

Step by Step Solution

1. Step 1: Write the proportion equation
   58,598 : 90,810 = 90,810 : x
2. Step 2: Convert to fraction form
   58,598/90,810 = 90,810/x
3. Step 3: Cross multiply
   58,598x = 90,810 × 90,810
4. Step 4: Simplify right side
   58,598x = 8,246,456,100
5. Step 5: Solve for x
   x = 8,246,456,100/58,598
6. Step 6: Final answer
   x = 140,729.31