Finding the Third Proportional to 10,210,412 and 21,772,390

Step by Step Solution

1. Step 1: Write the proportion equation
   10,210,412 : 21,772,390 = 21,772,390 : x
2. Step 2: Convert to fraction form
   10,210,412/21,772,390 = 21,772,390/x
3. Step 3: Cross multiply
   10,210,412x = 21,772,390 × 21,772,390
4. Step 4: Simplify right side
   10,210,412x = 474,036,966,312,100
5. Step 5: Solve for x
   x = 474,036,966,312,100/10,210,412
6. Step 6: Final answer
   x = 46,426,820.61