Finding the Third Proportional to 3,685,286 and 7,974,220

Step by Step Solution

1. Step 1: Write the proportion equation
   3,685,286 : 7,974,220 = 7,974,220 : x
2. Step 2: Convert to fraction form
   3,685,286/7,974,220 = 7,974,220/x
3. Step 3: Cross multiply
   3,685,286x = 7,974,220 × 7,974,220
4. Step 4: Simplify right side
   3,685,286x = 63,588,184,608,400
5. Step 5: Solve for x
   x = 63,588,184,608,400/3,685,286
6. Step 6: Final answer
   x = 17,254,613.24