Finding the Third Proportional to 57,009.13 and 89,428.88

Step by Step Solution

1. Step 1: Write the proportion equation
   57,009.13 : 89,428.88 = 89,428.88 : x
2. Step 2: Convert to fraction form
   57,009.13/89,428.88 = 89,428.88/x
3. Step 3: Cross multiply
   57,009.13x = 89,428.88 × 89,428.88
4. Step 4: Simplify right side
   57,009.13x = 7,997,523,683.77
5. Step 5: Solve for x
   x = 7,997,523,683.77/57,009.13
6. Step 6: Final answer
   x = 140,284.98