Finding the Third Proportional to 88,470 and 123,321

Step by Step Solution

1. Step 1: Write the proportion equation
   88,470 : 123,321 = 123,321 : x
2. Step 2: Convert to fraction form
   88,470/123,321 = 123,321/x
3. Step 3: Cross multiply
   88,470x = 123,321 × 123,321
4. Step 4: Simplify right side
   88,470x = 15,208,069,041
5. Step 5: Solve for x
   x = 15,208,069,041/88,470
6. Step 6: Final answer
   x = 171,900.86