Finding the Third Proportional to 19,445,696 and 42,390,400

Step by Step Solution

1. Step 1: Write the proportion equation
   19,445,696 : 42,390,400 = 42,390,400 : x
2. Step 2: Convert to fraction form
   19,445,696/42,390,400 = 42,390,400/x
3. Step 3: Cross multiply
   19,445,696x = 42,390,400 × 42,390,400
4. Step 4: Simplify right side
   19,445,696x = 1,796,946,012,160,000
5. Step 5: Solve for x
   x = 1,796,946,012,160,000/19,445,696
6. Step 6: Final answer
   x = 92,408,418.41