Finding the Third Proportional to 80,970,638 and 176,317,156

Step by Step Solution

1. Step 1: Write the proportion equation
   80,970,638 : 176,317,156 = 176,317,156 : x
2. Step 2: Convert to fraction form
   80,970,638/176,317,156 = 176,317,156/x
3. Step 3: Cross multiply
   80,970,638x = 176,317,156 × 176,317,156
4. Step 4: Simplify right side
   80,970,638x = 31,087,739,499,928,336
5. Step 5: Solve for x
   x = 31,087,739,499,928,336/80,970,638
6. Step 6: Final answer
   x = 383,938,428.40