Finding the Third Proportional to 269,552,280 and 385,196,452.50

Step by Step Solution

1. Step 1: Write the proportion equation
   269,552,280 : 385,196,452.50 = 385,196,452.50 : x
2. Step 2: Convert to fraction form
   269,552,280/385,196,452.50 = 385,196,452.50/x
3. Step 3: Cross multiply
   269,552,280x = 385,196,452.50 × 385,196,452.50
4. Step 4: Simplify right side
   269,552,280x = 148,376,307,018,584,768
5. Step 5: Solve for x
   x = 148,376,307,018,584,768/269,552,280
6. Step 6: Final answer
   x = 550,454,653.99