Finding the Third Proportional to 7,878,374 and 17,137,109

Step by Step Solution

1. Step 1: Write the proportion equation
   7,878,374 : 17,137,109 = 17,137,109 : x
2. Step 2: Convert to fraction form
   7,878,374/17,137,109 = 17,137,109/x
3. Step 3: Cross multiply
   7,878,374x = 17,137,109 × 17,137,109
4. Step 4: Simplify right side
   7,878,374x = 293,680,504,877,881
5. Step 5: Solve for x
   x = 293,680,504,877,881/7,878,374
6. Step 6: Final answer
   x = 37,276,791.49