Finding the Third Proportional to 72,346 and 156,720

Step by Step Solution

1. Step 1: Write the proportion equation
   72,346 : 156,720 = 156,720 : x
2. Step 2: Convert to fraction form
   72,346/156,720 = 156,720/x
3. Step 3: Cross multiply
   72,346x = 156,720 × 156,720
4. Step 4: Simplify right side
   72,346x = 24,561,158,400
5. Step 5: Solve for x
   x = 24,561,158,400/72,346
6. Step 6: Final answer
   x = 339,495.73