Finding the Third Proportional to 13,199,792 and 21,003,672

Step by Step Solution

1. Step 1: Write the proportion equation
   13,199,792 : 21,003,672 = 21,003,672 : x
2. Step 2: Convert to fraction form
   13,199,792/21,003,672 = 21,003,672/x
3. Step 3: Cross multiply
   13,199,792x = 21,003,672 × 21,003,672
4. Step 4: Simplify right side
   13,199,792x = 441,154,237,483,584
5. Step 5: Solve for x
   x = 441,154,237,483,584/13,199,792
6. Step 6: Final answer
   x = 33,421,302.21