Finding the Third Proportional to 5,709,212 and 8,349,456

Step by Step Solution

1. Step 1: Write the proportion equation
   5,709,212 : 8,349,456 = 8,349,456 : x
2. Step 2: Convert to fraction form
   5,709,212/8,349,456 = 8,349,456/x
3. Step 3: Cross multiply
   5,709,212x = 8,349,456 × 8,349,456
4. Step 4: Simplify right side
   5,709,212x = 69,713,415,495,936
5. Step 5: Solve for x
   x = 69,713,415,495,936/5,709,212
6. Step 6: Final answer
   x = 12,210,689.58