Finding the Third Proportional to 69,238,921.50 and 109,638,157.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,238,921.50 : 109,638,157.50 = 109,638,157.50 : x
2. Step 2: Convert to fraction form
   69,238,921.50/109,638,157.50 = 109,638,157.50/x
3. Step 3: Cross multiply
   69,238,921.50x = 109,638,157.50 × 109,638,157.50
4. Step 4: Simplify right side
   69,238,921.50x = 12,020,525,579,994,806
5. Step 5: Solve for x
   x = 12,020,525,579,994,806/69,238,921.50
6. Step 6: Final answer
   x = 173,609,370.56