Finding the Third Proportional to 272,234,081 and 418,443,290

Step by Step Solution

1. Step 1: Write the proportion equation
   272,234,081 : 418,443,290 = 418,443,290 : x
2. Step 2: Convert to fraction form
   272,234,081/418,443,290 = 418,443,290/x
3. Step 3: Cross multiply
   272,234,081x = 418,443,290 × 418,443,290
4. Step 4: Simplify right side
   272,234,081x = 175,094,786,946,024,096
5. Step 5: Solve for x
   x = 175,094,786,946,024,096/272,234,081
6. Step 6: Final answer
   x = 643,177,321.16