Finding the Third Proportional to 90,630 and 137,943

Step by Step Solution

1. Step 1: Write the proportion equation
   90,630 : 137,943 = 137,943 : x
2. Step 2: Convert to fraction form
   90,630/137,943 = 137,943/x
3. Step 3: Cross multiply
   90,630x = 137,943 × 137,943
4. Step 4: Simplify right side
   90,630x = 19,028,271,249
5. Step 5: Solve for x
   x = 19,028,271,249/90,630
6. Step 6: Final answer
   x = 209,955.55