Finding the Third Proportional to 405,686,267.25 and 606,141,265.69

Step by Step Solution

1. Step 1: Write the proportion equation
   405,686,267.25 : 606,141,265.69 = 606,141,265.69 : x
2. Step 2: Convert to fraction form
   405,686,267.25/606,141,265.69 = 606,141,265.69/x
3. Step 3: Cross multiply
   405,686,267.25x = 606,141,265.69 × 606,141,265.69
4. Step 4: Simplify right side
   405,686,267.25x = 367,407,233,969,244,480
5. Step 5: Solve for x
   x = 367,407,233,969,244,480/405,686,267.25
6. Step 6: Final answer
   x = 905,643,753.88