Finding the Third Proportional to 11,817,590 and 25,705,711

Step by Step Solution

1. Step 1: Write the proportion equation
   11,817,590 : 25,705,711 = 25,705,711 : x
2. Step 2: Convert to fraction form
   11,817,590/25,705,711 = 25,705,711/x
3. Step 3: Cross multiply
   11,817,590x = 25,705,711 × 25,705,711
4. Step 4: Simplify right side
   11,817,590x = 660,783,578,015,521
5. Step 5: Solve for x
   x = 660,783,578,015,521/11,817,590
6. Step 6: Final answer
   x = 55,915,256.67