Finding the Third Proportional to 13,078,609 and 21,535,298

Step by Step Solution

1. Step 1: Write the proportion equation
   13,078,609 : 21,535,298 = 21,535,298 : x
2. Step 2: Convert to fraction form
   13,078,609/21,535,298 = 21,535,298/x
3. Step 3: Cross multiply
   13,078,609x = 21,535,298 × 21,535,298
4. Step 4: Simplify right side
   13,078,609x = 463,769,059,948,804
5. Step 5: Solve for x
   x = 463,769,059,948,804/13,078,609
6. Step 6: Final answer
   x = 35,460,121.18