Finding the Third Proportional to 215,795,005 and 315,499,843.50

Step by Step Solution

1. Step 1: Write the proportion equation
   215,795,005 : 315,499,843.50 = 315,499,843.50 : x
2. Step 2: Convert to fraction form
   215,795,005/315,499,843.50 = 315,499,843.50/x
3. Step 3: Cross multiply
   215,795,005x = 315,499,843.50 × 315,499,843.50
4. Step 4: Simplify right side
   215,795,005x = 99,540,151,248,524,496
5. Step 5: Solve for x
   x = 99,540,151,248,524,496/215,795,005
6. Step 6: Final answer
   x = 461,271,803.99