Finding the Third Proportional to 153,620 and 238,422

Step by Step Solution

1. Step 1: Write the proportion equation
   153,620 : 238,422 = 238,422 : x
2. Step 2: Convert to fraction form
   153,620/238,422 = 238,422/x
3. Step 3: Cross multiply
   153,620x = 238,422 × 238,422
4. Step 4: Simplify right side
   153,620x = 56,845,050,084
5. Step 5: Solve for x
   x = 56,845,050,084/153,620
6. Step 6: Final answer
   x = 370,036.78