Finding the Third Proportional to 19,445,628 and 42,390,264

Step by Step Solution

1. Step 1: Write the proportion equation
   19,445,628 : 42,390,264 = 42,390,264 : x
2. Step 2: Convert to fraction form
   19,445,628/42,390,264 = 42,390,264/x
3. Step 3: Cross multiply
   19,445,628x = 42,390,264 × 42,390,264
4. Step 4: Simplify right side
   19,445,628x = 1,796,934,481,989,696
5. Step 5: Solve for x
   x = 1,796,934,481,989,696/19,445,628
6. Step 6: Final answer
   x = 92,408,148.61