Finding the Third Proportional to 51,728,326 and 86,210,404

Step by Step Solution

1. Step 1: Write the proportion equation
   51,728,326 : 86,210,404 = 86,210,404 : x
2. Step 2: Convert to fraction form
   51,728,326/86,210,404 = 86,210,404/x
3. Step 3: Cross multiply
   51,728,326x = 86,210,404 × 86,210,404
4. Step 4: Simplify right side
   51,728,326x = 7,432,233,757,843,216
5. Step 5: Solve for x
   x = 7,432,233,757,843,216/51,728,326
6. Step 6: Final answer
   x = 143,678,219.12