Finding the Third Proportional to 15,780.29 and 34,384.03

Step by Step Solution

1. Step 1: Write the proportion equation
   15,780.29 : 34,384.03 = 34,384.03 : x
2. Step 2: Convert to fraction form
   15,780.29/34,384.03 = 34,384.03/x
3. Step 3: Cross multiply
   15,780.29x = 34,384.03 × 34,384.03
4. Step 4: Simplify right side
   15,780.29x = 1,182,261,202.06
5. Step 5: Solve for x
   x = 1,182,261,202.06/15,780.29
6. Step 6: Final answer
   x = 74,920.13