Finding the Third Proportional to 58,340 and 90,086

Step by Step Solution

1. Step 1: Write the proportion equation
   58,340 : 90,086 = 90,086 : x
2. Step 2: Convert to fraction form
   58,340/90,086 = 90,086/x
3. Step 3: Cross multiply
   58,340x = 90,086 × 90,086
4. Step 4: Simplify right side
   58,340x = 8,115,487,396
5. Step 5: Solve for x
   x = 8,115,487,396/58,340
6. Step 6: Final answer
   x = 139,106.74