Finding the Third Proportional to 297,990 and 652,666.50

Step by Step Solution

1. Step 1: Write the proportion equation
   297,990 : 652,666.50 = 652,666.50 : x
2. Step 2: Convert to fraction form
   297,990/652,666.50 = 652,666.50/x
3. Step 3: Cross multiply
   297,990x = 652,666.50 × 652,666.50
4. Step 4: Simplify right side
   297,990x = 425,973,560,222.25
5. Step 5: Solve for x
   x = 425,973,560,222.25/297,990
6. Step 6: Final answer
   x = 1,429,489.45