Finding the Third Proportional to 57,435 and 89,069

Step by Step Solution

1. Step 1: Write the proportion equation
   57,435 : 89,069 = 89,069 : x
2. Step 2: Convert to fraction form
   57,435/89,069 = 89,069/x
3. Step 3: Cross multiply
   57,435x = 89,069 × 89,069
4. Step 4: Simplify right side
   57,435x = 7,933,286,761
5. Step 5: Solve for x
   x = 7,933,286,761/57,435
6. Step 6: Final answer
   x = 138,126.35