Finding the Third Proportional to 10,147,712 and 21,357,820

Step by Step Solution

1. Step 1: Write the proportion equation
   10,147,712 : 21,357,820 = 21,357,820 : x
2. Step 2: Convert to fraction form
   10,147,712/21,357,820 = 21,357,820/x
3. Step 3: Cross multiply
   10,147,712x = 21,357,820 × 21,357,820
4. Step 4: Simplify right side
   10,147,712x = 456,156,475,152,400
5. Step 5: Solve for x
   x = 456,156,475,152,400/10,147,712
6. Step 6: Final answer
   x = 44,951,657.59