Finding the Third Proportional to 1,358,140 and 2,878,178

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358,140 : 2,878,178 = 2,878,178 : x
2. Step 2: Convert to fraction form
   1,358,140/2,878,178 = 2,878,178/x
3. Step 3: Cross multiply
   1,358,140x = 2,878,178 × 2,878,178
4. Step 4: Simplify right side
   1,358,140x = 8,283,908,599,684
5. Step 5: Solve for x
   x = 8,283,908,599,684/1,358,140
6. Step 6: Final answer
   x = 6,099,451.16