Finding the Third Proportional to 12,369,842 and 19,884,456

Step by Step Solution

1. Step 1: Write the proportion equation
   12,369,842 : 19,884,456 = 19,884,456 : x
2. Step 2: Convert to fraction form
   12,369,842/19,884,456 = 19,884,456/x
3. Step 3: Cross multiply
   12,369,842x = 19,884,456 × 19,884,456
4. Step 4: Simplify right side
   12,369,842x = 395,391,590,415,936
5. Step 5: Solve for x
   x = 395,391,590,415,936/12,369,842
6. Step 6: Final answer
   x = 31,964,158.51