Finding the Third Proportional to 1,578,423 and 3,409,066

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,423 : 3,409,066 = 3,409,066 : x
2. Step 2: Convert to fraction form
   1,578,423/3,409,066 = 3,409,066/x
3. Step 3: Cross multiply
   1,578,423x = 3,409,066 × 3,409,066
4. Step 4: Simplify right side
   1,578,423x = 11,621,730,992,356
5. Step 5: Solve for x
   x = 11,621,730,992,356/1,578,423
6. Step 6: Final answer
   x = 7,362,874.84