Finding the Third Proportional to 57,955 and 89,690

Step by Step Solution

1. Step 1: Write the proportion equation
   57,955 : 89,690 = 89,690 : x
2. Step 2: Convert to fraction form
   57,955/89,690 = 89,690/x
3. Step 3: Cross multiply
   57,955x = 89,690 × 89,690
4. Step 4: Simplify right side
   57,955x = 8,044,296,100
5. Step 5: Solve for x
   x = 8,044,296,100/57,955
6. Step 6: Final answer
   x = 138,802.45