Finding the Third Proportional to 351,222 and 501,886.50

Step by Step Solution

1. Step 1: Write the proportion equation
   351,222 : 501,886.50 = 501,886.50 : x
2. Step 2: Convert to fraction form
   351,222/501,886.50 = 501,886.50/x
3. Step 3: Cross multiply
   351,222x = 501,886.50 × 501,886.50
4. Step 4: Simplify right side
   351,222x = 251,890,058,882.25
5. Step 5: Solve for x
   x = 251,890,058,882.25/351,222
6. Step 6: Final answer
   x = 717,181.89