Finding the Third Proportional to 3,494,680 and 7,475,120

Step by Step Solution

1. Step 1: Write the proportion equation
   3,494,680 : 7,475,120 = 7,475,120 : x
2. Step 2: Convert to fraction form
   3,494,680/7,475,120 = 7,475,120/x
3. Step 3: Cross multiply
   3,494,680x = 7,475,120 × 7,475,120
4. Step 4: Simplify right side
   3,494,680x = 55,877,419,014,400
5. Step 5: Solve for x
   x = 55,877,419,014,400/3,494,680
6. Step 6: Final answer
   x = 15,989,280.57