Finding the Third Proportional to 5,455,539 and 8,558,499

Step by Step Solution

1. Step 1: Write the proportion equation
   5,455,539 : 8,558,499 = 8,558,499 : x
2. Step 2: Convert to fraction form
   5,455,539/8,558,499 = 8,558,499/x
3. Step 3: Cross multiply
   5,455,539x = 8,558,499 × 8,558,499
4. Step 4: Simplify right side
   5,455,539x = 73,247,905,133,001
5. Step 5: Solve for x
   x = 73,247,905,133,001/5,455,539
6. Step 6: Final answer
   x = 13,426,337.00