Finding the Third Proportional to 123,539,910 and 263,495,172

Step by Step Solution

1. Step 1: Write the proportion equation
   123,539,910 : 263,495,172 = 263,495,172 : x
2. Step 2: Convert to fraction form
   123,539,910/263,495,172 = 263,495,172/x
3. Step 3: Cross multiply
   123,539,910x = 263,495,172 × 263,495,172
4. Step 4: Simplify right side
   123,539,910x = 69,429,705,667,309,584
5. Step 5: Solve for x
   x = 69,429,705,667,309,584/123,539,910
6. Step 6: Final answer
   x = 562,002,236.10