Finding the Third Proportional to 215,795,008 and 315,499,848

Step by Step Solution

1. Step 1: Write the proportion equation
   215,795,008 : 315,499,848 = 315,499,848 : x
2. Step 2: Convert to fraction form
   215,795,008/315,499,848 = 315,499,848/x
3. Step 3: Cross multiply
   215,795,008x = 315,499,848 × 315,499,848
4. Step 4: Simplify right side
   215,795,008x = 99,540,154,088,023,104
5. Step 5: Solve for x
   x = 99,540,154,088,023,104/215,795,008
6. Step 6: Final answer
   x = 461,271,810.74