Finding the Third Proportional to 59,291,353 and 128,479,563

Step by Step Solution

1. Step 1: Write the proportion equation
   59,291,353 : 128,479,563 = 128,479,563 : x
2. Step 2: Convert to fraction form
   59,291,353/128,479,563 = 128,479,563/x
3. Step 3: Cross multiply
   59,291,353x = 128,479,563 × 128,479,563
4. Step 4: Simplify right side
   59,291,353x = 16,506,998,108,670,968
5. Step 5: Solve for x
   x = 16,506,998,108,670,968/59,291,353
6. Step 6: Final answer
   x = 278,404,814.08