Finding the Third Proportional to 13,443,679 and 20,663,902.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,443,679 : 20,663,902.50 = 20,663,902.50 : x
2. Step 2: Convert to fraction form
   13,443,679/20,663,902.50 = 20,663,902.50/x
3. Step 3: Cross multiply
   13,443,679x = 20,663,902.50 × 20,663,902.50
4. Step 4: Simplify right side
   13,443,679x = 426,996,866,529,506.25
5. Step 5: Solve for x
   x = 426,996,866,529,506.25/13,443,679
6. Step 6: Final answer
   x = 31,761,905.84