Finding the Third Proportional to 12,791,180 and 19,680,806

Step by Step Solution

1. Step 1: Write the proportion equation
   12,791,180 : 19,680,806 = 19,680,806 : x
2. Step 2: Convert to fraction form
   12,791,180/19,680,806 = 19,680,806/x
3. Step 3: Cross multiply
   12,791,180x = 19,680,806 × 19,680,806
4. Step 4: Simplify right side
   12,791,180x = 387,334,124,809,636
5. Step 5: Solve for x
   x = 387,334,124,809,636/12,791,180
6. Step 6: Final answer
   x = 30,281,344.24