Finding the Third Proportional to 11,817,558 and 25,705,659

Step by Step Solution

1. Step 1: Write the proportion equation
   11,817,558 : 25,705,659 = 25,705,659 : x
2. Step 2: Convert to fraction form
   11,817,558/25,705,659 = 25,705,659/x
3. Step 3: Cross multiply
   11,817,558x = 25,705,659 × 25,705,659
4. Step 4: Simplify right side
   11,817,558x = 660,780,904,624,281
5. Step 5: Solve for x
   x = 660,780,904,624,281/11,817,558
6. Step 6: Final answer
   x = 55,915,181.85