Finding the Third Proportional to 426,432 and 919,291.50

Step by Step Solution

1. Step 1: Write the proportion equation
   426,432 : 919,291.50 = 919,291.50 : x
2. Step 2: Convert to fraction form
   426,432/919,291.50 = 919,291.50/x
3. Step 3: Cross multiply
   426,432x = 919,291.50 × 919,291.50
4. Step 4: Simplify right side
   426,432x = 845,096,861,972.25
5. Step 5: Solve for x
   x = 845,096,861,972.25/426,432
6. Step 6: Final answer
   x = 1,981,785.75