Finding the Third Proportional to 297,511.50 and 453,243

Step by Step Solution

1. Step 1: Write the proportion equation
   297,511.50 : 453,243 = 453,243 : x
2. Step 2: Convert to fraction form
   297,511.50/453,243 = 453,243/x
3. Step 3: Cross multiply
   297,511.50x = 453,243 × 453,243
4. Step 4: Simplify right side
   297,511.50x = 205,429,217,049
5. Step 5: Solve for x
   x = 205,429,217,049/297,511.50
6. Step 6: Final answer
   x = 690,491.69