Finding the Third Proportional to 3,693,209 and 5,673,221

Step by Step Solution

1. Step 1: Write the proportion equation
   3,693,209 : 5,673,221 = 5,673,221 : x
2. Step 2: Convert to fraction form
   3,693,209/5,673,221 = 5,673,221/x
3. Step 3: Cross multiply
   3,693,209x = 5,673,221 × 5,673,221
4. Step 4: Simplify right side
   3,693,209x = 32,185,436,514,841
5. Step 5: Solve for x
   x = 32,185,436,514,841/3,693,209
6. Step 6: Final answer
   x = 8,714,761.75