Finding the Third Proportional to 426,432 and 919,290

Step by Step Solution

1. Step 1: Write the proportion equation
   426,432 : 919,290 = 919,290 : x
2. Step 2: Convert to fraction form
   426,432/919,290 = 919,290/x
3. Step 3: Cross multiply
   426,432x = 919,290 × 919,290
4. Step 4: Simplify right side
   426,432x = 845,094,104,100
5. Step 5: Solve for x
   x = 845,094,104,100/426,432
6. Step 6: Final answer
   x = 1,981,779.29