Finding the Third Proportional to 5,640,964 and 8,593,678

Step by Step Solution

1. Step 1: Write the proportion equation
   5,640,964 : 8,593,678 = 8,593,678 : x
2. Step 2: Convert to fraction form
   5,640,964/8,593,678 = 8,593,678/x
3. Step 3: Cross multiply
   5,640,964x = 8,593,678 × 8,593,678
4. Step 4: Simplify right side
   5,640,964x = 73,851,301,567,684
5. Step 5: Solve for x
   x = 73,851,301,567,684/5,640,964
6. Step 6: Final answer
   x = 13,091,964.70