Finding the Third Proportional to 297,061.50 and 641,476.50

Step by Step Solution

1. Step 1: Write the proportion equation
   297,061.50 : 641,476.50 = 641,476.50 : x
2. Step 2: Convert to fraction form
   297,061.50/641,476.50 = 641,476.50/x
3. Step 3: Cross multiply
   297,061.50x = 641,476.50 × 641,476.50
4. Step 4: Simplify right side
   297,061.50x = 411,492,100,052.25
5. Step 5: Solve for x
   x = 411,492,100,052.25/297,061.50
6. Step 6: Final answer
   x = 1,385,208.45