Finding the Third Proportional to 272,234,036 and 418,443,222

Step by Step Solution

1. Step 1: Write the proportion equation
   272,234,036 : 418,443,222 = 418,443,222 : x
2. Step 2: Convert to fraction form
   272,234,036/418,443,222 = 418,443,222/x
3. Step 3: Cross multiply
   272,234,036x = 418,443,222 × 418,443,222
4. Step 4: Simplify right side
   272,234,036x = 175,094,730,037,741,280
5. Step 5: Solve for x
   x = 175,094,730,037,741,280/272,234,036
6. Step 6: Final answer
   x = 643,177,218.43