Finding the Third Proportional to 133,911 and 278,917.88

Step by Step Solution

1. Step 1: Write the proportion equation
   133,911 : 278,917.88 = 278,917.88 : x
2. Step 2: Convert to fraction form
   133,911/278,917.88 = 278,917.88/x
3. Step 3: Cross multiply
   133,911x = 278,917.88 × 278,917.88
4. Step 4: Simplify right side
   133,911x = 77,795,180,994.52
5. Step 5: Solve for x
   x = 77,795,180,994.52/133,911
6. Step 6: Final answer
   x = 580,946.90