Finding the Third Proportional to 401,250 and 623,299.50

Step by Step Solution

1. Step 1: Write the proportion equation
   401,250 : 623,299.50 = 623,299.50 : x
2. Step 2: Convert to fraction form
   401,250/623,299.50 = 623,299.50/x
3. Step 3: Cross multiply
   401,250x = 623,299.50 × 623,299.50
4. Step 4: Simplify right side
   401,250x = 388,502,266,700.25
5. Step 5: Solve for x
   x = 388,502,266,700.25/401,250
6. Step 6: Final answer
   x = 968,229.95