Finding the Third Proportional to 14,377.31 and 31,420.13

Step by Step Solution

1. Step 1: Write the proportion equation
   14,377.31 : 31,420.13 = 31,420.13 : x
2. Step 2: Convert to fraction form
   14,377.31/31,420.13 = 31,420.13/x
3. Step 3: Cross multiply
   14,377.31x = 31,420.13 × 31,420.13
4. Step 4: Simplify right side
   14,377.31x = 987,224,255.02
5. Step 5: Solve for x
   x = 987,224,255.02/14,377.31
6. Step 6: Final answer
   x = 68,665.42