Finding the Third Proportional to 72,727,158,446 and 169,923,457,978

Step by Step Solution

1. Step 1: Write the proportion equation
   72,727,158,446 : 169,923,457,978 = 169,923,457,978 : x
2. Step 2: Convert to fraction form
   72,727,158,446/169,923,457,978 = 169,923,457,978/x
3. Step 3: Cross multiply
   72,727,158,446x = 169,923,457,978 × 169,923,457,978
4. Step 4: Simplify right side
   72,727,158,446x = 28,873,981,571,201,132,134,400
5. Step 5: Solve for x
   x = 28,873,981,571,201,132,134,400/72,727,158,446
6. Step 6: Final answer
   x = 397,017,870,464.99