Finding the Third Proportional to 697,138 and 1,042,931

Step by Step Solution

1. Step 1: Write the proportion equation
   697,138 : 1,042,931 = 1,042,931 : x
2. Step 2: Convert to fraction form
   697,138/1,042,931 = 1,042,931/x
3. Step 3: Cross multiply
   697,138x = 1,042,931 × 1,042,931
4. Step 4: Simplify right side
   697,138x = 1,087,705,070,761
5. Step 5: Solve for x
   x = 1,087,705,070,761/697,138
6. Step 6: Final answer
   x = 1,560,243.55