Finding the Third Proportional to 59,513,476 and 128,958,391.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,513,476 : 128,958,391.50 = 128,958,391.50 : x
2. Step 2: Convert to fraction form
   59,513,476/128,958,391.50 = 128,958,391.50/x
3. Step 3: Cross multiply
   59,513,476x = 128,958,391.50 × 128,958,391.50
4. Step 4: Simplify right side
   59,513,476x = 16,630,266,738,267,272
5. Step 5: Solve for x
   x = 16,630,266,738,267,272/59,513,476
6. Step 6: Final answer
   x = 279,436,992.36