Finding the Third Proportional to 5,178,906 and 7,840,335

Step by Step Solution

1. Step 1: Write the proportion equation
   5,178,906 : 7,840,335 = 7,840,335 : x
2. Step 2: Convert to fraction form
   5,178,906/7,840,335 = 7,840,335/x
3. Step 3: Cross multiply
   5,178,906x = 7,840,335 × 7,840,335
4. Step 4: Simplify right side
   5,178,906x = 61,470,852,912,225
5. Step 5: Solve for x
   x = 61,470,852,912,225/5,178,906
6. Step 6: Final answer
   x = 11,869,466.82