Finding the Third Proportional to 19,445,680 and 42,390,368

Step by Step Solution

1. Step 1: Write the proportion equation
   19,445,680 : 42,390,368 = 42,390,368 : x
2. Step 2: Convert to fraction form
   19,445,680/42,390,368 = 42,390,368/x
3. Step 3: Cross multiply
   19,445,680x = 42,390,368 × 42,390,368
4. Step 4: Simplify right side
   19,445,680x = 1,796,943,299,175,424
5. Step 5: Solve for x
   x = 1,796,943,299,175,424/19,445,680
6. Step 6: Final answer
   x = 92,408,354.92