Finding the Third Proportional to 3,556,400 and 7,787,367.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,556,400 : 7,787,367.50 = 7,787,367.50 : x
2. Step 2: Convert to fraction form
   3,556,400/7,787,367.50 = 7,787,367.50/x
3. Step 3: Cross multiply
   3,556,400x = 7,787,367.50 × 7,787,367.50
4. Step 4: Simplify right side
   3,556,400x = 60,643,092,580,056.25
5. Step 5: Solve for x
   x = 60,643,092,580,056.25/3,556,400
6. Step 6: Final answer
   x = 17,051,819.98