Finding the Third Proportional to 7,878,384 and 17,137,128

Step by Step Solution

1. Step 1: Write the proportion equation
   7,878,384 : 17,137,128 = 17,137,128 : x
2. Step 2: Convert to fraction form
   7,878,384/17,137,128 = 17,137,128/x
3. Step 3: Cross multiply
   7,878,384x = 17,137,128 × 17,137,128
4. Step 4: Simplify right side
   7,878,384x = 293,681,156,088,384
5. Step 5: Solve for x
   x = 293,681,156,088,384/7,878,384
6. Step 6: Final answer
   x = 37,276,826.83