Finding the Third Proportional to 59,116 and 90,860

Step by Step Solution

1. Step 1: Write the proportion equation
   59,116 : 90,860 = 90,860 : x
2. Step 2: Convert to fraction form
   59,116/90,860 = 90,860/x
3. Step 3: Cross multiply
   59,116x = 90,860 × 90,860
4. Step 4: Simplify right side
   59,116x = 8,255,539,600
5. Step 5: Solve for x
   x = 8,255,539,600/59,116
6. Step 6: Final answer
   x = 139,649.83