Finding the Third Proportional to 238,611 and 322,900.50

Step by Step Solution

1. Step 1: Write the proportion equation
   238,611 : 322,900.50 = 322,900.50 : x
2. Step 2: Convert to fraction form
   238,611/322,900.50 = 322,900.50/x
3. Step 3: Cross multiply
   238,611x = 322,900.50 × 322,900.50
4. Step 4: Simplify right side
   238,611x = 104,264,732,900.25
5. Step 5: Solve for x
   x = 104,264,732,900.25/238,611
6. Step 6: Final answer
   x = 436,965.32