Finding the Third Proportional to 57,372 and 85,446

Step by Step Solution

1. Step 1: Write the proportion equation
   57,372 : 85,446 = 85,446 : x
2. Step 2: Convert to fraction form
   57,372/85,446 = 85,446/x
3. Step 3: Cross multiply
   57,372x = 85,446 × 85,446
4. Step 4: Simplify right side
   57,372x = 7,301,018,916
5. Step 5: Solve for x
   x = 7,301,018,916/57,372
6. Step 6: Final answer
   x = 127,257.53