Finding the Third Proportional to 31,374 and 72,603

Step by Step Solution

1. Step 1: Write the proportion equation
   31,374 : 72,603 = 72,603 : x
2. Step 2: Convert to fraction form
   31,374/72,603 = 72,603/x
3. Step 3: Cross multiply
   31,374x = 72,603 × 72,603
4. Step 4: Simplify right side
   31,374x = 5,271,195,609
5. Step 5: Solve for x
   x = 5,271,195,609/31,374
6. Step 6: Final answer
   x = 168,011.59