Finding the Third Proportional to 297,748 and 647,979.50

Step by Step Solution

1. Step 1: Write the proportion equation
   297,748 : 647,979.50 = 647,979.50 : x
2. Step 2: Convert to fraction form
   297,748/647,979.50 = 647,979.50/x
3. Step 3: Cross multiply
   297,748x = 647,979.50 × 647,979.50
4. Step 4: Simplify right side
   297,748x = 419,877,432,420.25
5. Step 5: Solve for x
   x = 419,877,432,420.25/297,748
6. Step 6: Final answer
   x = 1,410,177.17