Finding the Third Proportional to 1,578,550 and 3,409,700

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,550 : 3,409,700 = 3,409,700 : x
2. Step 2: Convert to fraction form
   1,578,550/3,409,700 = 3,409,700/x
3. Step 3: Cross multiply
   1,578,550x = 3,409,700 × 3,409,700
4. Step 4: Simplify right side
   1,578,550x = 11,626,054,090,000
5. Step 5: Solve for x
   x = 11,626,054,090,000/1,578,550
6. Step 6: Final answer
   x = 7,365,021.12