Finding the Third Proportional to 15,783.61 and 35,071.10

Step by Step Solution

1. Step 1: Write the proportion equation
   15,783.61 : 35,071.10 = 35,071.10 : x
2. Step 2: Convert to fraction form
   15,783.61/35,071.10 = 35,071.10/x
3. Step 3: Cross multiply
   15,783.61x = 35,071.10 × 35,071.10
4. Step 4: Simplify right side
   15,783.61x = 1,229,982,164.81
5. Step 5: Solve for x
   x = 1,229,982,164.81/15,783.61
6. Step 6: Final answer
   x = 77,927.81