Finding the Third Proportional to 297,620 and 449,113.50

Step by Step Solution

1. Step 1: Write the proportion equation
   297,620 : 449,113.50 = 449,113.50 : x
2. Step 2: Convert to fraction form
   297,620/449,113.50 = 449,113.50/x
3. Step 3: Cross multiply
   297,620x = 449,113.50 × 449,113.50
4. Step 4: Simplify right side
   297,620x = 201,702,935,882.25
5. Step 5: Solve for x
   x = 201,702,935,882.25/297,620
6. Step 6: Final answer
   x = 677,719.70