Finding the Third Proportional to 74,608.50 and 145,410

Step by Step Solution

1. Step 1: Write the proportion equation
   74,608.50 : 145,410 = 145,410 : x
2. Step 2: Convert to fraction form
   74,608.50/145,410 = 145,410/x
3. Step 3: Cross multiply
   74,608.50x = 145,410 × 145,410
4. Step 4: Simplify right side
   74,608.50x = 21,144,068,100
5. Step 5: Solve for x
   x = 21,144,068,100/74,608.50
6. Step 6: Final answer
   x = 283,400.26