Finding the Third Proportional to 3,645,678 and 7,852,326

Step by Step Solution

1. Step 1: Write the proportion equation
   3,645,678 : 7,852,326 = 7,852,326 : x
2. Step 2: Convert to fraction form
   3,645,678/7,852,326 = 7,852,326/x
3. Step 3: Cross multiply
   3,645,678x = 7,852,326 × 7,852,326
4. Step 4: Simplify right side
   3,645,678x = 61,659,023,610,276
5. Step 5: Solve for x
   x = 61,659,023,610,276/3,645,678
6. Step 6: Final answer
   x = 16,912,909.92