Finding the Third Proportional to 621,238.50 and 941,215.50

Step by Step Solution

1. Step 1: Write the proportion equation
   621,238.50 : 941,215.50 = 941,215.50 : x
2. Step 2: Convert to fraction form
   621,238.50/941,215.50 = 941,215.50/x
3. Step 3: Cross multiply
   621,238.50x = 941,215.50 × 941,215.50
4. Step 4: Simplify right side
   621,238.50x = 885,886,617,440.25
5. Step 5: Solve for x
   x = 885,886,617,440.25/621,238.50
6. Step 6: Final answer
   x = 1,426,000.83