Finding the Third Proportional to 5,178,924 and 7,840,362

Step by Step Solution

1. Step 1: Write the proportion equation
   5,178,924 : 7,840,362 = 7,840,362 : x
2. Step 2: Convert to fraction form
   5,178,924/7,840,362 = 7,840,362/x
3. Step 3: Cross multiply
   5,178,924x = 7,840,362 × 7,840,362
4. Step 4: Simplify right side
   5,178,924x = 61,471,276,291,044
5. Step 5: Solve for x
   x = 61,471,276,291,044/5,178,924
6. Step 6: Final answer
   x = 11,869,507.31