Finding the Third Proportional to 606,438 and 928,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   606,438 : 928,111.50 = 928,111.50 : x
2. Step 2: Convert to fraction form
   606,438/928,111.50 = 928,111.50/x
3. Step 3: Cross multiply
   606,438x = 928,111.50 × 928,111.50
4. Step 4: Simplify right side
   606,438x = 861,390,956,432.25
5. Step 5: Solve for x
   x = 861,390,956,432.25/606,438
6. Step 6: Final answer
   x = 1,420,410.59