Finding the Third Proportional to 453,420 and 989,932.50

Step by Step Solution

1. Step 1: Write the proportion equation
   453,420 : 989,932.50 = 989,932.50 : x
2. Step 2: Convert to fraction form
   453,420/989,932.50 = 989,932.50/x
3. Step 3: Cross multiply
   453,420x = 989,932.50 × 989,932.50
4. Step 4: Simplify right side
   453,420x = 979,966,354,556.25
5. Step 5: Solve for x
   x = 979,966,354,556.25/453,420
6. Step 6: Final answer
   x = 2,161,277.30