Finding the Third Proportional to 74,358 and 100,399.50

Step by Step Solution

1. Step 1: Write the proportion equation
   74,358 : 100,399.50 = 100,399.50 : x
2. Step 2: Convert to fraction form
   74,358/100,399.50 = 100,399.50/x
3. Step 3: Cross multiply
   74,358x = 100,399.50 × 100,399.50
4. Step 4: Simplify right side
   74,358x = 10,080,059,600.25
5. Step 5: Solve for x
   x = 10,080,059,600.25/74,358
6. Step 6: Final answer
   x = 135,561.20