Finding the Third Proportional to 10,430,952 and 21,156,681

Step by Step Solution

1. Step 1: Write the proportion equation
   10,430,952 : 21,156,681 = 21,156,681 : x
2. Step 2: Convert to fraction form
   10,430,952/21,156,681 = 21,156,681/x
3. Step 3: Cross multiply
   10,430,952x = 21,156,681 × 21,156,681
4. Step 4: Simplify right side
   10,430,952x = 447,605,150,935,761
5. Step 5: Solve for x
   x = 447,605,150,935,761/10,430,952
6. Step 6: Final answer
   x = 42,911,246.35