Finding the Third Proportional to 72,372 and 156,820

Step by Step Solution

1. Step 1: Write the proportion equation
   72,372 : 156,820 = 156,820 : x
2. Step 2: Convert to fraction form
   72,372/156,820 = 156,820/x
3. Step 3: Cross multiply
   72,372x = 156,820 × 156,820
4. Step 4: Simplify right side
   72,372x = 24,592,512,400
5. Step 5: Solve for x
   x = 24,592,512,400/72,372
6. Step 6: Final answer
   x = 339,807.00