Finding the Third Proportional to 1,553,980 and 3,663,172

Step by Step Solution

1. Step 1: Write the proportion equation
   1,553,980 : 3,663,172 = 3,663,172 : x
2. Step 2: Convert to fraction form
   1,553,980/3,663,172 = 3,663,172/x
3. Step 3: Cross multiply
   1,553,980x = 3,663,172 × 3,663,172
4. Step 4: Simplify right side
   1,553,980x = 13,418,829,101,584
5. Step 5: Solve for x
   x = 13,418,829,101,584/1,553,980
6. Step 6: Final answer
   x = 8,635,136.30