Finding the Third Proportional to 123,486,430.50 and 268,495,401

Step by Step Solution

1. Step 1: Write the proportion equation
   123,486,430.50 : 268,495,401 = 268,495,401 : x
2. Step 2: Convert to fraction form
   123,486,430.50/268,495,401 = 268,495,401/x
3. Step 3: Cross multiply
   123,486,430.50x = 268,495,401 × 268,495,401
4. Step 4: Simplify right side
   123,486,430.50x = 72,089,780,358,150,800
5. Step 5: Solve for x
   x = 72,089,780,358,150,800/123,486,430.50
6. Step 6: Final answer
   x = 583,787,061.19