Finding the Third Proportional to 1,578,174 and 3,399,720

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,174 : 3,399,720 = 3,399,720 : x
2. Step 2: Convert to fraction form
   1,578,174/3,399,720 = 3,399,720/x
3. Step 3: Cross multiply
   1,578,174x = 3,399,720 × 3,399,720
4. Step 4: Simplify right side
   1,578,174x = 11,558,096,078,400
5. Step 5: Solve for x
   x = 11,558,096,078,400/1,578,174
6. Step 6: Final answer
   x = 7,323,714.67