Finding the Third Proportional to 647,674,584 and 947,221,146

Step by Step Solution

1. Step 1: Write the proportion equation
   647,674,584 : 947,221,146 = 947,221,146 : x
2. Step 2: Convert to fraction form
   647,674,584/947,221,146 = 947,221,146/x
3. Step 3: Cross multiply
   647,674,584x = 947,221,146 × 947,221,146
4. Step 4: Simplify right side
   647,674,584x = 897,227,899,429,553,280
5. Step 5: Solve for x
   x = 897,227,899,429,553,280/647,674,584
6. Step 6: Final answer
   x = 1,385,306,636.38