Finding the Third Proportional to 456,902 and 990,076

Step by Step Solution

1. Step 1: Write the proportion equation
   456,902 : 990,076 = 990,076 : x
2. Step 2: Convert to fraction form
   456,902/990,076 = 990,076/x
3. Step 3: Cross multiply
   456,902x = 990,076 × 990,076
4. Step 4: Simplify right side
   456,902x = 980,250,485,776
5. Step 5: Solve for x
   x = 980,250,485,776/456,902
6. Step 6: Final answer
   x = 2,145,428.31