Finding the Third Proportional to 621,099 and 940,963.50

Step by Step Solution

1. Step 1: Write the proportion equation
   621,099 : 940,963.50 = 940,963.50 : x
2. Step 2: Convert to fraction form
   621,099/940,963.50 = 940,963.50/x
3. Step 3: Cross multiply
   621,099x = 940,963.50 × 940,963.50
4. Step 4: Simplify right side
   621,099x = 885,412,308,332.25
5. Step 5: Solve for x
   x = 885,412,308,332.25/621,099
6. Step 6: Final answer
   x = 1,425,557.45