Finding the Third Proportional to 17,643,796.50 and 38,426,688

Step by Step Solution

1. Step 1: Write the proportion equation
   17,643,796.50 : 38,426,688 = 38,426,688 : x
2. Step 2: Convert to fraction form
   17,643,796.50/38,426,688 = 38,426,688/x
3. Step 3: Cross multiply
   17,643,796.50x = 38,426,688 × 38,426,688
4. Step 4: Simplify right side
   17,643,796.50x = 1,476,610,350,649,344
5. Step 5: Solve for x
   x = 1,476,610,350,649,344/17,643,796.50
6. Step 6: Final answer
   x = 83,690,057.90