Finding the Third Proportional to 188,076,440 and 290,499,564

Step by Step Solution

1. Step 1: Write the proportion equation
   188,076,440 : 290,499,564 = 290,499,564 : x
2. Step 2: Convert to fraction form
   188,076,440/290,499,564 = 290,499,564/x
3. Step 3: Cross multiply
   188,076,440x = 290,499,564 × 290,499,564
4. Step 4: Simplify right side
   188,076,440x = 84,389,996,684,190,096
5. Step 5: Solve for x
   x = 84,389,996,684,190,096/188,076,440
6. Step 6: Final answer
   x = 448,700,521.36