Finding the Third Proportional to 190,431 and 451,162.50

Step by Step Solution

1. Step 1: Write the proportion equation
   190,431 : 451,162.50 = 451,162.50 : x
2. Step 2: Convert to fraction form
   190,431/451,162.50 = 451,162.50/x
3. Step 3: Cross multiply
   190,431x = 451,162.50 × 451,162.50
4. Step 4: Simplify right side
   190,431x = 203,547,601,406.25
5. Step 5: Solve for x
   x = 203,547,601,406.25/190,431
6. Step 6: Final answer
   x = 1,068,878.50