Finding the Third Proportional to 17,142,309 and 36,609,469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,142,309 : 36,609,469.50 = 36,609,469.50 : x
2. Step 2: Convert to fraction form
   17,142,309/36,609,469.50 = 36,609,469.50/x
3. Step 3: Cross multiply
   17,142,309x = 36,609,469.50 × 36,609,469.50
4. Step 4: Simplify right side
   17,142,309x = 1,340,253,257,071,430.25
5. Step 5: Solve for x
   x = 1,340,253,257,071,430.25/17,142,309
6. Step 6: Final answer
   x = 78,183,939.93