Finding the Third Proportional to 3,742,620 and 8,120,480

Step by Step Solution

1. Step 1: Write the proportion equation
   3,742,620 : 8,120,480 = 8,120,480 : x
2. Step 2: Convert to fraction form
   3,742,620/8,120,480 = 8,120,480/x
3. Step 3: Cross multiply
   3,742,620x = 8,120,480 × 8,120,480
4. Step 4: Simplify right side
   3,742,620x = 65,942,195,430,400
5. Step 5: Solve for x
   x = 65,942,195,430,400/3,742,620
6. Step 6: Final answer
   x = 17,619,260.15