Finding the Third Proportional to 3,664,028 and 7,831,220

Step by Step Solution

1. Step 1: Write the proportion equation
   3,664,028 : 7,831,220 = 7,831,220 : x
2. Step 2: Convert to fraction form
   3,664,028/7,831,220 = 7,831,220/x
3. Step 3: Cross multiply
   3,664,028x = 7,831,220 × 7,831,220
4. Step 4: Simplify right side
   3,664,028x = 61,328,006,688,400
5. Step 5: Solve for x
   x = 61,328,006,688,400/3,664,028
6. Step 6: Final answer
   x = 16,737,865.18