Finding the Third Proportional to 1,570,991 and 3,671,345

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570,991 : 3,671,345 = 3,671,345 : x
2. Step 2: Convert to fraction form
   1,570,991/3,671,345 = 3,671,345/x
3. Step 3: Cross multiply
   1,570,991x = 3,671,345 × 3,671,345
4. Step 4: Simplify right side
   1,570,991x = 13,478,774,109,025
5. Step 5: Solve for x
   x = 13,478,774,109,025/1,570,991
6. Step 6: Final answer
   x = 8,579,790.79