Finding the Third Proportional to 58,779 and 89,550

Step by Step Solution

1. Step 1: Write the proportion equation
   58,779 : 89,550 = 89,550 : x
2. Step 2: Convert to fraction form
   58,779/89,550 = 89,550/x
3. Step 3: Cross multiply
   58,779x = 89,550 × 89,550
4. Step 4: Simplify right side
   58,779x = 8,019,202,500
5. Step 5: Solve for x
   x = 8,019,202,500/58,779
6. Step 6: Final answer
   x = 136,429.72