Finding the Third Proportional to 57,942.84 and 89,672.06

Step by Step Solution

1. Step 1: Write the proportion equation
   57,942.84 : 89,672.06 = 89,672.06 : x
2. Step 2: Convert to fraction form
   57,942.84/89,672.06 = 89,672.06/x
3. Step 3: Cross multiply
   57,942.84x = 89,672.06 × 89,672.06
4. Step 4: Simplify right side
   57,942.84x = 8,041,078,793.00
5. Step 5: Solve for x
   x = 8,041,078,793.00/57,942.84
6. Step 6: Final answer
   x = 138,776.05