Finding the Third Proportional to 431,643 and 939,916.50

Step by Step Solution

1. Step 1: Write the proportion equation
   431,643 : 939,916.50 = 939,916.50 : x
2. Step 2: Convert to fraction form
   431,643/939,916.50 = 939,916.50/x
3. Step 3: Cross multiply
   431,643x = 939,916.50 × 939,916.50
4. Step 4: Simplify right side
   431,643x = 883,443,026,972.25
5. Step 5: Solve for x
   x = 883,443,026,972.25/431,643
6. Step 6: Final answer
   x = 2,046,698.38