Finding the Third Proportional to 10,256,280 and 21,885,460

Step by Step Solution

1. Step 1: Write the proportion equation
   10,256,280 : 21,885,460 = 21,885,460 : x
2. Step 2: Convert to fraction form
   10,256,280/21,885,460 = 21,885,460/x
3. Step 3: Cross multiply
   10,256,280x = 21,885,460 × 21,885,460
4. Step 4: Simplify right side
   10,256,280x = 478,973,359,411,600
5. Step 5: Solve for x
   x = 478,973,359,411,600/10,256,280
6. Step 6: Final answer
   x = 46,700,495.64