Finding the Third Proportional to 434,433 and 644,881.50

Step by Step Solution

1. Step 1: Write the proportion equation
   434,433 : 644,881.50 = 644,881.50 : x
2. Step 2: Convert to fraction form
   434,433/644,881.50 = 644,881.50/x
3. Step 3: Cross multiply
   434,433x = 644,881.50 × 644,881.50
4. Step 4: Simplify right side
   434,433x = 415,872,149,042.25
5. Step 5: Solve for x
   x = 415,872,149,042.25/434,433
6. Step 6: Final answer
   x = 957,275.69