Finding the Third Proportional to 1,681,572 and 3,690,168

Step by Step Solution

1. Step 1: Write the proportion equation
   1,681,572 : 3,690,168 = 3,690,168 : x
2. Step 2: Convert to fraction form
   1,681,572/3,690,168 = 3,690,168/x
3. Step 3: Cross multiply
   1,681,572x = 3,690,168 × 3,690,168
4. Step 4: Simplify right side
   1,681,572x = 13,617,339,868,224
5. Step 5: Solve for x
   x = 13,617,339,868,224/1,681,572
6. Step 6: Final answer
   x = 8,097,982.05