Finding the Third Proportional to 12,072,328 and 18,843,321

Step by Step Solution

1. Step 1: Write the proportion equation
   12,072,328 : 18,843,321 = 18,843,321 : x
2. Step 2: Convert to fraction form
   12,072,328/18,843,321 = 18,843,321/x
3. Step 3: Cross multiply
   12,072,328x = 18,843,321 × 18,843,321
4. Step 4: Simplify right side
   12,072,328x = 355,070,746,309,041
5. Step 5: Solve for x
   x = 355,070,746,309,041/12,072,328
6. Step 6: Final answer
   x = 29,411,953.21