Finding the Third Proportional to 42,445,638 and 90,942,696

Step by Step Solution

1. Step 1: Write the proportion equation
   42,445,638 : 90,942,696 = 90,942,696 : x
2. Step 2: Convert to fraction form
   42,445,638/90,942,696 = 90,942,696/x
3. Step 3: Cross multiply
   42,445,638x = 90,942,696 × 90,942,696
4. Step 4: Simplify right side
   42,445,638x = 8,270,573,955,748,416
5. Step 5: Solve for x
   x = 8,270,573,955,748,416/42,445,638
6. Step 6: Final answer
   x = 194,850,975.16