Finding the Third Proportional to 297,091.50 and 641,526

Step by Step Solution

1. Step 1: Write the proportion equation
   297,091.50 : 641,526 = 641,526 : x
2. Step 2: Convert to fraction form
   297,091.50/641,526 = 641,526/x
3. Step 3: Cross multiply
   297,091.50x = 641,526 × 641,526
4. Step 4: Simplify right side
   297,091.50x = 411,555,608,676
5. Step 5: Solve for x
   x = 411,555,608,676/297,091.50
6. Step 6: Final answer
   x = 1,385,282.34