Finding the Third Proportional to 164,074.22 and 253,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   164,074.22 : 253,111.50 = 253,111.50 : x
2. Step 2: Convert to fraction form
   164,074.22/253,111.50 = 253,111.50/x
3. Step 3: Cross multiply
   164,074.22x = 253,111.50 × 253,111.50
4. Step 4: Simplify right side
   164,074.22x = 64,065,431,432.25
5. Step 5: Solve for x
   x = 64,065,431,432.25/164,074.22
6. Step 6: Final answer
   x = 390,466.17