Finding the Third Proportional to 56,672 and 83,280

Step by Step Solution

1. Step 1: Write the proportion equation
   56,672 : 83,280 = 83,280 : x
2. Step 2: Convert to fraction form
   56,672/83,280 = 83,280/x
3. Step 3: Cross multiply
   56,672x = 83,280 × 83,280
4. Step 4: Simplify right side
   56,672x = 6,935,558,400
5. Step 5: Solve for x
   x = 6,935,558,400/56,672
6. Step 6: Final answer
   x = 122,380.69