Finding the Third Proportional to 296,502 and 638,032.50

Step by Step Solution

1. Step 1: Write the proportion equation
   296,502 : 638,032.50 = 638,032.50 : x
2. Step 2: Convert to fraction form
   296,502/638,032.50 = 638,032.50/x
3. Step 3: Cross multiply
   296,502x = 638,032.50 × 638,032.50
4. Step 4: Simplify right side
   296,502x = 407,085,471,056.25
5. Step 5: Solve for x
   x = 407,085,471,056.25/296,502
6. Step 6: Final answer
   x = 1,372,960.29