Finding the Third Proportional to 4,610,460 and 9,931,128

Step by Step Solution

1. Step 1: Write the proportion equation
   4,610,460 : 9,931,128 = 9,931,128 : x
2. Step 2: Convert to fraction form
   4,610,460/9,931,128 = 9,931,128/x
3. Step 3: Cross multiply
   4,610,460x = 9,931,128 × 9,931,128
4. Step 4: Simplify right side
   4,610,460x = 98,627,303,352,384
5. Step 5: Solve for x
   x = 98,627,303,352,384/4,610,460
6. Step 6: Final answer
   x = 21,392,074.40