Finding the Third Proportional to 388,410 and 602,776.50

Step by Step Solution

1. Step 1: Write the proportion equation
   388,410 : 602,776.50 = 602,776.50 : x
2. Step 2: Convert to fraction form
   388,410/602,776.50 = 602,776.50/x
3. Step 3: Cross multiply
   388,410x = 602,776.50 × 602,776.50
4. Step 4: Simplify right side
   388,410x = 363,339,508,952.25
5. Step 5: Solve for x
   x = 363,339,508,952.25/388,410
6. Step 6: Final answer
   x = 935,453.54