Finding the Third Proportional to 456,894 and 990,060

Step by Step Solution

1. Step 1: Write the proportion equation
   456,894 : 990,060 = 990,060 : x
2. Step 2: Convert to fraction form
   456,894/990,060 = 990,060/x
3. Step 3: Cross multiply
   456,894x = 990,060 × 990,060
4. Step 4: Simplify right side
   456,894x = 980,218,803,600
5. Step 5: Solve for x
   x = 980,218,803,600/456,894
6. Step 6: Final answer
   x = 2,145,396.53