Finding the Third Proportional to 238,521 and 322,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   238,521 : 322,789.50 = 322,789.50 : x
2. Step 2: Convert to fraction form
   238,521/322,789.50 = 322,789.50/x
3. Step 3: Cross multiply
   238,521x = 322,789.50 × 322,789.50
4. Step 4: Simplify right side
   238,521x = 104,193,061,310.25
5. Step 5: Solve for x
   x = 104,193,061,310.25/238,521
6. Step 6: Final answer
   x = 436,829.72