Finding the Third Proportional to 42,588 and 66,672

Step by Step Solution

1. Step 1: Write the proportion equation
   42,588 : 66,672 = 66,672 : x
2. Step 2: Convert to fraction form
   42,588/66,672 = 66,672/x
3. Step 3: Cross multiply
   42,588x = 66,672 × 66,672
4. Step 4: Simplify right side
   42,588x = 4,445,155,584
5. Step 5: Solve for x
   x = 4,445,155,584/42,588
6. Step 6: Final answer
   x = 104,375.78