Finding the Third Proportional to 2,602,840 and 5,640,070

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602,840 : 5,640,070 = 5,640,070 : x
2. Step 2: Convert to fraction form
   2,602,840/5,640,070 = 5,640,070/x
3. Step 3: Cross multiply
   2,602,840x = 5,640,070 × 5,640,070
4. Step 4: Simplify right side
   2,602,840x = 31,810,389,604,900
5. Step 5: Solve for x
   x = 31,810,389,604,900/2,602,840
6. Step 6: Final answer
   x = 12,221,415.69