Finding the Third Proportional to 422,392 and 919,142

Step by Step Solution

1. Step 1: Write the proportion equation
   422,392 : 919,142 = 919,142 : x
2. Step 2: Convert to fraction form
   422,392/919,142 = 919,142/x
3. Step 3: Cross multiply
   422,392x = 919,142 × 919,142
4. Step 4: Simplify right side
   422,392x = 844,822,016,164
5. Step 5: Solve for x
   x = 844,822,016,164/422,392
6. Step 6: Final answer
   x = 2,000,090.00