Finding the Third Proportional to 16,780.50 and 34,921.13

Step by Step Solution

1. Step 1: Write the proportion equation
   16,780.50 : 34,921.13 = 34,921.13 : x
2. Step 2: Convert to fraction form
   16,780.50/34,921.13 = 34,921.13/x
3. Step 3: Cross multiply
   16,780.50x = 34,921.13 × 34,921.13
4. Step 4: Simplify right side
   16,780.50x = 1,219,484,971.27
5. Step 5: Solve for x
   x = 1,219,484,971.27/16,780.50
6. Step 6: Final answer
   x = 72,672.74