Finding the Third Proportional to 74,592 and 152,640

Step by Step Solution

1. Step 1: Write the proportion equation
   74,592 : 152,640 = 152,640 : x
2. Step 2: Convert to fraction form
   74,592/152,640 = 152,640/x
3. Step 3: Cross multiply
   74,592x = 152,640 × 152,640
4. Step 4: Simplify right side
   74,592x = 23,298,969,600
5. Step 5: Solve for x
   x = 23,298,969,600/74,592
6. Step 6: Final answer
   x = 312,352.12