Finding the Third Proportional to 456,898.50 and 990,069

Step by Step Solution

1. Step 1: Write the proportion equation
   456,898.50 : 990,069 = 990,069 : x
2. Step 2: Convert to fraction form
   456,898.50/990,069 = 990,069/x
3. Step 3: Cross multiply
   456,898.50x = 990,069 × 990,069
4. Step 4: Simplify right side
   456,898.50x = 980,236,624,761
5. Step 5: Solve for x
   x = 980,236,624,761/456,898.50
6. Step 6: Final answer
   x = 2,145,414.41