Finding the Third Proportional to 3,644,070 and 8,436,174

Step by Step Solution

1. Step 1: Write the proportion equation
   3,644,070 : 8,436,174 = 8,436,174 : x
2. Step 2: Convert to fraction form
   3,644,070/8,436,174 = 8,436,174/x
3. Step 3: Cross multiply
   3,644,070x = 8,436,174 × 8,436,174
4. Step 4: Simplify right side
   3,644,070x = 71,169,031,758,276
5. Step 5: Solve for x
   x = 71,169,031,758,276/3,644,070
6. Step 6: Final answer
   x = 19,530,094.58