Finding the Third Proportional to 188,076,443 and 290,499,569

Step by Step Solution

1. Step 1: Write the proportion equation
   188,076,443 : 290,499,569 = 290,499,569 : x
2. Step 2: Convert to fraction form
   188,076,443/290,499,569 = 290,499,569/x
3. Step 3: Cross multiply
   188,076,443x = 290,499,569 × 290,499,569
4. Step 4: Simplify right side
   188,076,443x = 84,389,999,589,185,760
5. Step 5: Solve for x
   x = 84,389,999,589,185,760/188,076,443
6. Step 6: Final answer
   x = 448,700,529.65