Finding the Third Proportional to 15,607.69 and 34,921.13

Step by Step Solution

1. Step 1: Write the proportion equation
   15,607.69 : 34,921.13 = 34,921.13 : x
2. Step 2: Convert to fraction form
   15,607.69/34,921.13 = 34,921.13/x
3. Step 3: Cross multiply
   15,607.69x = 34,921.13 × 34,921.13
4. Step 4: Simplify right side
   15,607.69x = 1,219,484,971.27
5. Step 5: Solve for x
   x = 1,219,484,971.27/15,607.69
6. Step 6: Final answer
   x = 78,133.61