Finding the Third Proportional to 19,818,638 and 30,320,290

Step by Step Solution

1. Step 1: Write the proportion equation
   19,818,638 : 30,320,290 = 30,320,290 : x
2. Step 2: Convert to fraction form
   19,818,638/30,320,290 = 30,320,290/x
3. Step 3: Cross multiply
   19,818,638x = 30,320,290 × 30,320,290
4. Step 4: Simplify right side
   19,818,638x = 919,319,985,684,100
5. Step 5: Solve for x
   x = 919,319,985,684,100/19,818,638
6. Step 6: Final answer
   x = 46,386,637.96