Finding the Third Proportional to 4,817,978 and 10,429,826

Step by Step Solution

1. Step 1: Write the proportion equation
   4,817,978 : 10,429,826 = 10,429,826 : x
2. Step 2: Convert to fraction form
   4,817,978/10,429,826 = 10,429,826/x
3. Step 3: Cross multiply
   4,817,978x = 10,429,826 × 10,429,826
4. Step 4: Simplify right side
   4,817,978x = 108,781,270,390,276
5. Step 5: Solve for x
   x = 108,781,270,390,276/4,817,978
6. Step 6: Final answer
   x = 22,578,199.90