Finding the Third Proportional to 453,414 and 989,920.50

Step by Step Solution

1. Step 1: Write the proportion equation
   453,414 : 989,920.50 = 989,920.50 : x
2. Step 2: Convert to fraction form
   453,414/989,920.50 = 989,920.50/x
3. Step 3: Cross multiply
   453,414x = 989,920.50 × 989,920.50
4. Step 4: Simplify right side
   453,414x = 979,942,596,320.25
5. Step 5: Solve for x
   x = 979,942,596,320.25/453,414
6. Step 6: Final answer
   x = 2,161,253.50