Finding the Third Proportional to 92,816.72 and 139,429.69

Step by Step Solution

1. Step 1: Write the proportion equation
   92,816.72 : 139,429.69 = 139,429.69 : x
2. Step 2: Convert to fraction form
   92,816.72/139,429.69 = 139,429.69/x
3. Step 3: Cross multiply
   92,816.72x = 139,429.69 × 139,429.69
4. Step 4: Simplify right side
   92,816.72x = 19,440,637,756.35
5. Step 5: Solve for x
   x = 19,440,637,756.35/92,816.72
6. Step 6: Final answer
   x = 209,451.90