Finding the Third Proportional to 3,931,255.50 and 8,409,022.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931,255.50 : 8,409,022.50 = 8,409,022.50 : x
2. Step 2: Convert to fraction form
   3,931,255.50/8,409,022.50 = 8,409,022.50/x
3. Step 3: Cross multiply
   3,931,255.50x = 8,409,022.50 × 8,409,022.50
4. Step 4: Simplify right side
   3,931,255.50x = 70,711,659,405,506.25
5. Step 5: Solve for x
   x = 70,711,659,405,506.25/3,931,255.50
6. Step 6: Final answer
   x = 17,987,042.41