Finding the Third Proportional to 15,048,516 and 21,510,916

Step by Step Solution

1. Step 1: Write the proportion equation
   15,048,516 : 21,510,916 = 21,510,916 : x
2. Step 2: Convert to fraction form
   15,048,516/21,510,916 = 21,510,916/x
3. Step 3: Cross multiply
   15,048,516x = 21,510,916 × 21,510,916
4. Step 4: Simplify right side
   15,048,516x = 462,719,507,159,056
5. Step 5: Solve for x
   x = 462,719,507,159,056/15,048,516
6. Step 6: Final answer
   x = 30,748,514.15