Finding the Third Proportional to 109,355 and 139,732

Step by Step Solution

1. Step 1: Write the proportion equation
   109,355 : 139,732 = 139,732 : x
2. Step 2: Convert to fraction form
   109,355/139,732 = 139,732/x
3. Step 3: Cross multiply
   109,355x = 139,732 × 139,732
4. Step 4: Simplify right side
   109,355x = 19,525,031,824
5. Step 5: Solve for x
   x = 19,525,031,824/109,355
6. Step 6: Final answer
   x = 178,547.23